/* ============ 品牌介绍页 · page-about ============ */

.page-about {
  background-color: var(--ink-900);
  color: var(--ink-050);
  font-family: var(--font-sans);
  overflow-x: hidden;
}

/* ---- 面包屑 ---- */
.page-about .breadcrumb {
  max-width: var(--wrap-max);
  margin: 0 auto;
  padding: 22px clamp(20px, 5vw, 96px) 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--ink-300);
}
.page-about .breadcrumb__link {
  color: var(--ink-300);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.page-about .breadcrumb__link:hover,
.page-about .breadcrumb__link:focus-visible {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ---- 首屏框景 ---- */
.page-about .about-hero {
  padding: 20px clamp(20px, 5vw, 96px) clamp(40px, 6vw, 72px);
}
.page-about .about-hero__frame {
  position: relative;
  max-width: var(--wrap-max);
  margin: 0 auto;
  padding: clamp(28px, 4.5vw, 64px);
  border: 1px solid var(--ink-600);
  outline: 1px solid rgba(42, 62, 112, 0.45);
  outline-offset: -9px;
  background:
    linear-gradient(180deg, rgba(22, 38, 79, 0.62) 0%, rgba(7, 14, 34, 0.15) 100%),
    var(--ink-900);
  overflow: hidden;
}
.page-about .about-hero__frame::before {
  content: "";
  position: absolute;
  top: -25%;
  right: -12%;
  width: 62%;
  height: 155%;
  background: linear-gradient(
    104deg,
    transparent 45.6%,
    rgba(200, 255, 61, 0.09) 46.4%,
    rgba(200, 255, 61, 0.09) 48.4%,
    transparent 49.2%
  );
  transform: rotate(-6deg);
  pointer-events: none;
}
.page-about .about-hero__frame > * {
  position: relative;
  z-index: 1;
}
.page-about .about-hero__plate {
  margin-bottom: clamp(20px, 3vw, 32px);
}
.page-about .about-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(38px, 7vw, 92px);
  line-height: 1.02;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
  max-width: 12em;
}
.page-about .about-hero__lede {
  max-width: 58ch;
  margin: 0 0 clamp(28px, 4vw, 44px);
  font-size: clamp(16px, 1.35vw, 19px);
  line-height: 1.78;
  letter-spacing: 0.01em;
  color: var(--ink-300);
}
.page-about .about-hero__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 20px 32px;
  padding-top: 26px;
  border-top: 1px solid var(--ink-600);
}
.page-about .about-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 20px 48px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-about .stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 84px;
}
.page-about .stat__num {
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--accent);
}
.page-about .stat__label {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--ink-300);
}
.page-about .about-hero__refresh {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--ink-300);
}
@media (min-width: 880px) {
  .page-about .about-hero__refresh {
    margin-left: auto;
  }
}

/* ---- 章节骨架 ---- */
.page-about .about-section {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  max-width: var(--wrap-max);
  margin: 0 auto;
  padding: clamp(48px, 7vw, 96px) clamp(20px, 5vw, 96px);
  border-top: 1px solid rgba(42, 62, 112, 0.5);
}
@media (min-width: 900px) {
  .page-about .about-section {
    grid-template-columns: minmax(0, 150px) minmax(0, 1fr);
    gap: clamp(32px, 4vw, 64px);
  }
}
.page-about .about-section__aside {
  display: flex;
  align-items: center;
  gap: 10px;
}
@media (min-width: 900px) {
  .page-about .about-section__aside {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    position: sticky;
    top: calc(var(--header-h) + 28px);
    align-self: start;
  }
}
.page-about .about-section__num {
  display: inline-block;
  padding: 3px 8px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.16em;
  color: var(--accent);
  border: 1px solid var(--accent-dim);
  background: rgba(200, 255, 61, 0.08);
  border-radius: var(--radius);
}
.page-about .about-section__name {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--ink-300);
  text-transform: uppercase;
}
.page-about .about-section__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 3.6vw, 44px);
  line-height: 1.12;
  letter-spacing: -0.015em;
  margin: 0 0 16px;
  max-width: 20ch;
}
.page-about .about-section__lede {
  max-width: 60ch;
  margin: 0 0 clamp(28px, 3.5vw, 40px);
  font-size: clamp(15px, 1.15vw, 17px);
  line-height: 1.78;
  color: var(--ink-300);
}
.page-about .about-section__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}
@media (min-width: 900px) {
  .page-about .about-section__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: start;
    gap: clamp(28px, 3.5vw, 56px);
  }
}
.page-about .about-section__copy p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.78;
  color: var(--ink-050);
}
.page-about .about-section__copy p:last-child {
  margin-bottom: 0;
}

/* ---- 图片卡片 ---- */
.page-about .about-figure,
.page-about .about-flow__figure,
.page-about .about-team__figure {
  margin: 0;
  position: relative;
  border: 1px solid var(--ink-600);
  background: var(--ink-800);
  box-shadow: 7px 7px 0 rgba(14, 27, 60, 0.75), 8px 8px 0 rgba(42, 62, 112, 0.35);
}
.page-about .about-figure img,
.page-about .about-flow__figure img,
.page-about .about-team__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}
.page-about .about-figure__caption {
  display: block;
  padding: 12px 16px;
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.06em;
  color: var(--ink-300);
  border-top: 1px solid rgba(42, 62, 112, 0.55);
  background: rgba(7, 14, 34, 0.6);
}
.page-about .about-flow__figure,
.page-about .about-team__figure {
  margin-top: 28px;
}

/* ---- 时间线 ---- */
.page-about .timeline {
  position: relative;
  margin: 0;
  padding: 0 0 0 26px;
  list-style: none;
  display: grid;
  gap: 30px;
}
.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--accent-dim), var(--ink-600));
}
.page-about .timeline__node {
  position: relative;
}
.page-about .timeline__mark {
  position: absolute;
  left: -26px;
  top: 4px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--ink-900);
  border: 2px solid var(--accent);
  box-shadow: 0 0 0 3px rgba(7, 14, 34, 0.9), 0 0 14px rgba(200, 255, 61, 0.35);
}
.page-about .timeline__year {
  display: block;
  margin-bottom: 6px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.14em;
  color: var(--accent);
}
.page-about .timeline__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(15px, 1.35vw, 18px);
  line-height: 1.36;
  margin: 0 0 8px;
  letter-spacing: -0.005em;
}
.page-about .timeline__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--ink-300);
}
@media (min-width: 1000px) {
  .page-about .timeline {
    padding: 0;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 20px;
    padding-top: 30px;
  }
  .page-about .timeline::before {
    left: 0;
    right: 0;
    top: 5px;
    bottom: auto;
    width: auto;
    height: 1px;
    background: linear-gradient(90deg, var(--accent-dim), var(--ink-600) 70%, rgba(42, 62, 112, 0.35));
  }
  .page-about .timeline__node {
    padding-right: 16px;
  }
  .page-about .timeline__mark {
    left: 0;
    top: -30px;
  }
}

/* ---- 数据流程 ---- */
.page-about .about-flow {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}
@media (min-width: 760px) {
  .page-about .about-flow {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
  }
}
.page-about .about-flow__step {
  padding: 24px;
  background: var(--ink-700);
  border: 1px solid var(--ink-600);
}
@media (min-width: 760px) {
  .page-about .about-flow__step + .about-flow__step {
    border-left: 0;
  }
}
.page-about .about-flow__num {
  display: block;
  margin-bottom: 14px;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  color: var(--accent);
}
.page-about .about-flow__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  line-height: 1.3;
  margin: 0 0 10px;
}
.page-about .about-flow__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--ink-300);
}

/* ---- 团队 ---- */
.page-about .about-team {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}
@media (min-width: 620px) {
  .page-about .about-team {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (min-width: 1100px) {
  .page-about .about-team {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}
.page-about .about-team__card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 22px;
  background: var(--ink-700);
  border: 1px solid var(--ink-600);
  border-top-color: var(--ink-600);
  transition: border-color 0.2s ease, background-color 0.2s ease;
}
.page-about .about-team__card:hover {
  border-color: var(--accent-dim);
  background: var(--ink-800);
}
.page-about .about-team__num {
  font-size: clamp(30px, 3.4vw, 42px);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--accent);
}
.page-about .about-team__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.02em;
  margin: 0;
}
.page-about .about-team__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--ink-300);
}

/* ---- 覆盖 ---- */
.page-about .about-coverage {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}
@media (min-width: 880px) {
  .page-about .about-coverage {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
    gap: clamp(28px, 4vw, 56px);
  }
}
.page-about .about-coverage__figure {
  margin: 0;
}
.page-about .about-coverage__field {
  position: relative;
  aspect-ratio: 16 / 10;
  border: 1px solid var(--ink-600);
  background-color: rgba(22, 38, 79, 0.45);
  background-image: radial-gradient(circle at center, rgba(93, 112, 149, 0.8) 1.2px, transparent 1.7px);
  background-size: 20px 20px;
  overflow: hidden;
}
.page-about .about-coverage__field::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 44% 56% at 62% 48%, rgba(200, 255, 61, 0.22), transparent 62%),
    linear-gradient(
      160deg,
      transparent 34%,
      rgba(14, 27, 60, 0.9) 35%,
      rgba(14, 27, 60, 0.9) 56%,
      transparent 57%
    );
}
.page-about .about-coverage__field::after {
  content: "";
  position: absolute;
  left: 62%;
  top: 48%;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--accent);
  transform: translate(-50%, -50%);
  box-shadow:
    0 0 0 4px rgba(200, 255, 61, 0.16),
    0 0 22px rgba(200, 255, 61, 0.6);
}
.page-about .about-coverage__cap {
  display: block;
  margin-top: 12px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ink-300);
}
.page-about .about-coverage__text p {
  margin: 0 0 24px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink-050);
}
.page-about .about-coverage__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 0;
  padding: 22px 0 0;
  list-style: none;
  border-top: 1px solid var(--ink-600);
}
.page-about .about-coverage__stat {
  display: flex;
  flex-direction: column;
  gap: 5px;
  min-width: 0;
}
.page-about .about-coverage__num {
  font-size: clamp(22px, 2.4vw, 30px);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--accent);
}
.page-about .about-coverage__label {
  font-size: 11.5px;
  line-height: 1.5;
  letter-spacing: 0.06em;
  color: var(--ink-300);
}

/* ---- 合作生态 ---- */
.page-about .about-partners {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
@media (min-width: 760px) {
  .page-about .about-partners {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
.page-about .about-partners__card {
  position: relative;
  padding: 26px;
  border: 1px solid var(--ink-600);
  background: linear-gradient(180deg, rgba(22, 38, 79, 0.75) 0%, rgba(14, 27, 60, 0.35) 100%);
}
.page-about .about-partners__card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 46px;
  height: 3px;
  background: var(--violet);
}
.page-about .about-partners__num {
  display: block;
  margin-bottom: 12px;
  font-size: clamp(26px, 3vw, 34px);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--violet);
}
.page-about .about-partners__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  margin: 0 0 10px;
}
.page-about .about-partners__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--ink-300);
}
.page-about .about-partners__note {
  margin: 24px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--accent-dim);
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--ink-050);
}

/* ---- CTA ---- */
.page-about .about-cta {
  max-width: var(--wrap-max);
  margin: 0 auto;
  padding: clamp(32px, 5vw, 64px) clamp(20px, 5vw, 96px) clamp(72px, 9vw, 128px);
}
.page-about .about-cta__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  padding: clamp(30px, 4.5vw, 60px);
  border: 1px solid var(--ink-600);
  background:
    linear-gradient(135deg, rgba(22, 38, 79, 0.92) 0%, rgba(7, 14, 34, 0.7) 100%);
  overflow: hidden;
}
.page-about .about-cta__inner::before {
  content: "";
  position: absolute;
  top: -40%;
  left: -8%;
  width: 40%;
  height: 180%;
  background: linear-gradient(96deg, transparent 46%, rgba(138, 92, 255, 0.16) 47%, rgba(138, 92, 255, 0.16) 50%, transparent 51%);
  pointer-events: none;
}
@media (min-width: 880px) {
  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
    gap: 40px;
  }
}
.page-about .about-cta__label {
  display: inline-block;
  margin-bottom: 14px;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--accent);
}
.page-about .about-cta__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3vw, 38px);
  line-height: 1.14;
  letter-spacing: -0.015em;
  margin: 0 0 14px;
  position: relative;
}
.page-about .about-cta__desc {
  margin: 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink-300);
  position: relative;
}
.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  position: relative;
}

/* ---- 窄屏收敛 ---- */
@media (max-width: 560px) {
  .page-about .about-hero__stats {
    gap: 18px 26px;
  }
  .page-about .stat {
    min-width: 72px;
  }
  .page-about .about-coverage__stats {
    grid-template-columns: 1fr;
    gap: 18px;
  }
  .page-about .about-coverage__stat {
    flex-direction: row;
    align-items: baseline;
    gap: 10px;
  }
  .page-about .about-flow__step,
  .page-about .about-team__card,
  .page-about .about-partners__card {
    padding: 20px;
  }
}

/* ---- 动效降级 ---- */
@media (prefers-reduced-motion: reduce) {
  .page-about .about-team__card {
    transition: none;
  }
}
<<<END>>>